Stewart Wrights "The Swarm" from WrightsSuperiorChokes.com I have one for my wifes 11-87 Premier and use 3" 1-1/4oz 6's Hevi-13. DEADLY!!!!!!!!! This choke set the worlds record in 20ga with 43 pellets in a 3" circle at 40yds with Hevi-13's. It continued to do so for 4 straight years in a row. Shoots really well with Winch. Supremes in 5's as well.